Explosion-engine.



:Noa 842,468.

J. I. EAGEEGEEN.

PAIENIED JAN; 29, 1907.'

EXPLOSION ENGINE.

APPLIoATIoN FILED Mu ia.-19o5.

v,nr rs I Vnrrnn JONAS T. 'LAGERGREN, 0F NEW YGRK, N. Y.

EXPLOSQNMNGiNE.

No. sea/ies.

Speccation of Lettera Patent.

Patented Jan. 29, 1907.

Applicant nga May 16.1905. serai No. zsaeot.

T0 all whom, it rtcty concern;

4Be it known that l, JONAS T. LAGERGREN, asub'ectof the' King of Sweden, residing at New JYork, in the county of New York and State of New York, have invented certain new and useful Improvements in Explosion Engines, of which theiollowng is a specifi cation, such as will enable those skilled in the art to which' it appertains to make anduse the same.

This invention relates to what are known as explosion-engines 5 and the object thereof is to provide an improved device of' this class in which air and gas are used and in ywhich thel explosion takes place in an independent chamber separated from the main piston-cylinder and adapted to be placed in communication therewith at the moment the explosion is etlected, this communication being controlled by a valve construction whereby the exploded gases are led into the main piston-cylinder for the purpose of expanding therein, a further object being to provide an engine of the class specified with. chambers into which air under pressure and into which gas under pressure is admitted prior to the time of comminglin of such gas and air and prior to thegtime t at the explosion is desired and in which at the moment of explosion the communication between the main cylinder and the explosion-chamber is established;I and with'these and other objects in view the invention consists in an improven ment in eX 4 losion-engines as hereinafter described an claimed;

The invention is fully disclosed in the following specication, of which the accompanying drawing `forms a part, in which the separate parts oil my improvement are designated by suitable refer'ence characters, said drawing beinga sectional view of an explosion engine or motor constructed according t'o my invention.

In the application of .fr-y invention as shown in the drawing l provide an auxiliary piston-cylinder f, arranged, preferably, lonn gitndinally to lthe main cylinder c of any form of pressure-duid eX )lesion-engine. As illustrated, the main cylinder (L is provided with a piston b, actuating in the usual manner the crankshaft c by means of the connecting-rod d. The piston .7) is shown as nnishing its return stroke and the exploded gases are escaping', as usual, by means of an exhaustfvalve c, which latter is operated by means of an leccentric fastened to the main shaft c. As is usual with this style of er1-- gines, the same is provided with packingrings, means for lubrication, dan., all such features not forming a part of my invention and 6o not being specifically claimed herein. r The auxiliary piston-chamber f is provided with a spool-shaped reciprocating iston-vr valve g and contains a centrallycoated'r p chamber h, which is concentric to the central fj portion. of the piston-valve g. Compressed air from a reservoir, as shown in the drawing or direct from an air-compressor is admitte by means of a pipe i into the port 7c of the piston-cylinder A check-valve Z is interposed to intercept, as is usual, the back pressure from the piston f into the compressedair reservoir. Pipes m admit lubricating oil to the inner chambers n ot the piston g. l

vAs is shownin the drawing, inthis instance the air is admitted direct from an air-tank, such admission being controlled by means of en eccentric o placed on the-main shaft c. In stead of this construction any other device, such'as a compressor, may be used for admitting the air into the annular chamber h. The air-inlet port lc of the valve-cylinder f ccmmunicates, when in the position shown in the drawing, with communicating ports p, which form part of the piston g, and said Orts p enter into the annular chamber z.,1t lereby establishing direct communication between the compressed-air reservoir and said annular chamber 7L.

Compressed gas is admitted to an annular chamber s in the piston-valve g from a reservoir by means of the pipe g and check-valve `t, such admission being regulated by means of the eccentric w, locatedY on the main shaft c. Both annular chambers 7L and s are separated from each other when the valve isseated as shown in full lines in the drawing, bnt will communicate with each other andfgnrm: one single chamber when the valve is brought in position as shown by dotted lines in the rec drawing, at which position the air-ports` p communicate with an admission-port u, which la.L leads to the main iston-cylinder e; fing thereby access to t e same and to the gasccntaincd in the now combined chamber it and s.

In the operation of my invention conv pressed air is admitted, by means of the pipe t, checlcvalve l, the port k, and su plemental ports p, into theannular cham er 7L, and compressed gas is admitted, by means of the pipe g, check-valve i, into the 'annular chamber s. The eccentric r, which governs the reciprocating motion of the valve-piston g, is set iii-such a manner that when coin-munication between the supplemental ports pand the air-inlet port lc has been cut ofi by the forward motion of the piston g and just prior to the explosion of the commingled air and gas by means of the electric generator inter communication between u and p will be established iini'nediately prior to the finish of the outwardly-extending reciprocating stroke of the piston y, and the exploded gases contained in the now combined chamber s and h will. have free access to the admission-port u back of the cylinder b in order to produce, by means of its expansion7 its actuating force against the niain piston g.

It will thus be seen that the explosion of.

tank. At the return stroke of the valvepiston g the inlet-port u is cut ott again, and the port c for the compressed air, as well as the port for the compressed gas, are again placed in communication with the compressed air and compressed-gas reservoir, and the two annular chambers h and s are again separated from each other and form independent chambers for a repetition of the above-described method of charging7 igniting, and exploding the combustible material needed Afor the operation of my improved explosion-engine.

Having fully described. my invention, what I claim as new, and desire to secure by Letters Patent, is-- l. In an explosion-engine, a main cylinder provided with a reciprocatingr piston, a valve-cylinder and a valve working therein and forming separate annular air'and gas chambers when the valve is in the closed position, means for introducing compressed air and gas into said air and gas chambers respectively, said chambers upon the opening of the valve being united into one chamber which after the union of said separate annu-l lar chambers serves as an explosion-chamber for the therein-contained fluids under presceases sure, and an intercommunicatinv port between said eXplosion-chamber and the main piston-cylinder, substantially as shown and described.

2. In an explosion-engine, a main cylinder, a casing adjacent thereto andthe opposite end portions of which are formed into piston-valve cylinders, a coinbi-nation pistonvalve mounted in said casing and comprising two end piston-valve members movable in said cylinders and connected by a reduced portion forming a gas-chamber, said casing being also provided centrally thereof with an air-chamber, said gas and air chambers being l thrown into communication by the movement of the piston-valve to form an explosion-chamber7 a gas-supply connected with one end portion of said casing and adapted to supply gas to said `gas-chamber, an airsupply connected with the opposite end portions of said casing, and ports or passages formed in the piston-valve member in the last-named. end portion of said casing and adapted to form a communication between the air-supply and the air-chamber, the lastnanied end portion oi" said casing being also provided with a port or passage which communicates with the main-piston cylinder and said air-chamber being provided with an ignite/r, substantially as shown and described.

i. In an explosion-engine, a main cylinder provided with a main piston and al casing at one side thereof, said casing being composed of two parts forming piston-valve cylinders,

a combination piston-valve mounted in said casing and composed of two piston-valve members connected by a reduced neckshaped portion forming a gas-chamber, said casing being' also providedwith an air-chamber, an air-supply device connected with one end portion of said casing, a gas-supply connected with the opposite end portion of said casing, and means whereby the movement of said piston-valve will form a communication between the gas-chamber and the air-chamber, and between.y the air-supply and the airchamber, and between the air-chamber and the main cylinder, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my naine,` in presence of the subscribing witnesses, this 13th day of May, 1905.

IGNAS T. LAGERGREN.

Witnesses:

If. AYSTEWART. U. J. KLEIN. 

